Spreader



Feb. 13, 1923. M45-,265 J. C, BQHMKER SPREADER Filed June 25, 192s 2sheet sheet l a Feb. 13, 1923.

SPREADER Filed Jung a5', 1920 Y 2 'sheetsheet 2 f i @l m release rea.is, reas., ladet-59th@ 2 Adil. w

dior-Iii o::":so'HMK;En; orjnnnnannn,anuncis; assreitoaro fsnans,'ROEBUOKAND coser ionroeeo,Y irriinoisgn' CORPORATION for new YORK.

S13-READER.

Application lediil'une 23, 1920. Serial No. 391,177.

ZOaZZwLomz't maycoacem: A spur gear 4 carried upon the driving aXle yBeit Iknown that lt, JOHN C. Bornunnn, a `has drivingengagement with apinion .citizen oit the United States, .residing at mounted upon a stubaxle 6 supported-upon 55 Kanlr'alree,in the county #of lfanlrakee andthe body. j sprocket Wheel 7 having lined 5 :State of Illinois, haveinvented certain new relation to the pinion 5 is mounted on the anduseful Improvement in Spreaders7 of stub axle 6. At the rear end'ofthebody, a Which-the following' is: a-wspecitication. beater cylinder 8 fordischarging the load The inventionfrelates toE machines `for isrotatably supported thereon, having a 60 spreading m-anure'or other`fertilizer mate* shaft Qcarryingat'loneend agsprocket 10. 10 -rial5andliasparticular reference tof yvide The sprocket 10 is driven fromtheASpfIOcket spreaddistributing mechanisms therefor. 7 by meansojl" thedrive chain l1. "Ain idler The object Vofthe invention-primarilyis,sprocket 12 is mounted-upon a swinging htoprovide means-fordistributing lfertilizer bracket 13 attached to the body' 1,and Vis 65-over a Wide srvathand accomplish the -disadapted toadjust thetensionfofthe drive l5 tribution evenly throughout its Width. chain.Abovethe beater/cylinder ar rake 14 Anotherobject is to permitutil-izjingthe is suitably supported.uponthe bodyl. full capacity of amanure spreader bytill- As the foregoing devices are i111 Well ingiti-'With a crowned` load Without sacriknown it wilLnotfbef necessary todescribe 70 ticing uniformity-ofspread because of vthe theni moreininutely. Y Y greater l quantity-ot `-`material y discharged The Widespread distributing mechanism strom'thecenteroll amachine soloaded y isindicated in its entiretyatyngj Thede- V"Another object is .tol break-up thoroughly vice is mounted upon ashaict l5, ,which` is.l the .massesof material Which maybe delivjournaled in `bearings 416 adjustablymounted 75 ered by the discharging apparatus before upon a pair ofsupporting` brackets 17 suit- -itsdeposit upon'the soil. ably attachedto the body 'of the machine. `A fur-therr object 'is to provide" asimply The shaft 15 is positioned to the rearwardconstructeddurablemechanism which will and parallel to the shaft 9ofthe' beater operate eiiicientlyj and withstand the severe cylinder. AsprocketlS is rigidly mounted usage to which such devices aresubjected.` on the end ot the shattl which isdriven i Further yobjectsand advantages will be from a sprocket 1.9,mounted onthe shaft 9,apparent in the following' description -o a by av drive chain 20. The`sprocket .1S is preferred,embodiment of "my invention,`proportionedinysize to thesprocket 19'in` Y which is illustrated in theaccompanying such relation thattheWide-spread'device is drawings. j i y'revolved at considerably higher speed than Figure 1 oi' the `drawingsrepresents in thebeat'er cylinder. AA core 21 preferably plan viewtliewrear portion Aof amanure is mounted on tlieshaft ljhaving its axis.-spre'ader including the discharging apparacoincident With the axis of'the shaft, and -tusand its` driving n1,eans,.and myf device adaptedtorotate therewith. 90

mounted in connection therewith. Fig. 2 is ln the present embodimentillustrated in 40 a5 end vievof the same' mechanism. Fig. 1 l haveushownthe core -to 'be Yformed F ig. 3 is a side elevatiomfand illustrates they as of a pair `ot truncated cones of equal action ofthefertilizernmaterial"during opclineensions with their smaller Vendsabuteration of the' device. i Fig. e represent the ting at tlieqcenteroiithe core. -The core 95 *fdeviceconstructed Without'the core shown maybe constructed withv any varied rela- `4.5-inIF-igs. lto 3. 1 f tion ofdiameters between its ends which The` reference numeral il infilicatesthe.V `the type otspreader and the' desired direc- `body otthe manurespreader'which may be tionoi delivery may require.

equipped with one of the Well kno-Wn devices Spiral elements 22a andQZbare' attached 100 (not illustrated* ]i; 'erein)2 adaptedto propel to thecore 21, and form blades' 'varying in 507th@ :load rearwardly fordischarge. Rear. Width from end to' end and mount-ed `with Wheels Zaresuitablyniounted on af driving` an increasingpitch' from theAcentertothe axle Bliyhichisjournaledfupon the' body l.. ends' ot thecore. 'lfn mv preferred embodiment the blades are positioned with theirnarrow ends diametrically opposed at the center of the core, as at Q3,and extending outwardly upon progressively increasing pitch line andwith au increasing width of blade to the ends of the core. lt isapparent that the peripheries of the revolving blades will define asurface of revolution having' varying diameters. y

The core 2l is constructed to ull the space within the inner edges ofthe spiral blades, and thus to provide abase upon which the materialfrom the beater is received in position for the most effective action bythe blades. lt also prevents the clogging of material within the blades.diameter results in increasing the effect of centrifugal action upon thematerial falling between the revolving blades by reason of the greatersurface speed of the core at its larger cross sections. i

The spiral blades 22a and 22", operating at high speed', serve topulverize the fertile izer and distribute it over the soil. Theincreasing width ofthe blades gives correspondingly increasingdiameterto the sur face described by their revolution and 'A thereby theircentrifugal action in scattering the material is increased.` The latterresult is also accomplished in greater degree by the increasing` pitchof the blades. At

the center of the device the action of the' blades includes a distinctyslicing effect which tends lto propel the material laterally, and as thepitch increases toward the ends of the device, the surfaces of theblades approach the perpendicular to the direction of the materialcoming from the beater' and consequently the material is thrown from theblades with greater force.

It is well known'that in the operation of a manure spreader filled tocapacity with a crowned load, and equipped for the discharge of thematerial with a beater cylinder only, the spread will be a narrow swathunevenly distributed, the greater quantity being deposited at thecenter. The adaptation to manure spreaders of .auxiliary dis tributersof the typeI having spiral blades of uniform width mounted upon arapidly revolving` cylinder upon which is cast the material discharged'from the load by thc discharging cylinder accomplishes an in creasedwidth of spread, but has not given A satisfactory results in uniformityof spread.

in my device, having a core and blades formed in the manner illustrated,it willbe apparent that the greater volume of material discharged fromthe center portion of the load as cast over by the beater cylinder isreceived upon the center portion ofthe revolving distributor, whereatthe core is of least diameter, the blades are of least width, and thespiral pitch of the blades approach nearest to a diametrical plane.

Its increasing 1 /ifrance rlhe result of my arrangement of the core andblades is that where the greatest quantity of material is 4received uponthe blades, the laterally propelling action ofthe blades is in greatestproportion to their centrifugal action in expelling the material. Theproportionate effect of centrifugal force increases progressively towardthe ends of the distributerby reason of the increasing diameter of thecore and the increasing width andpitch of the blades.V By this means ihave provided for the lateral displacernen" of the excess quantity ofmaterial discharged from the center ofthe load to supply the deficiencyin the discharge from thesides of the load"`t0 the degree necessary todeposit a uniform amount of. material over the full width of the swath`covered by the distributer.`

Thev rapidly revolving spiral blades also accomplish the completedisintegration of any mass of fertilizer which is thrown over withoutbeing broken 'up bythe beater cylinder, and in thatresult further assurean `even distribution of the material.

a swath of fertilizer somewhat wider than the wheel tread of the manurespreader, and extending beyond both sides thereof. If it be desired todistribute the material in a swath extending to one side only, thedevice may be arranged to accomplish that result by constructing theblades with the proper relation of width and pitch required for uniformdistribution in one lateral direction of the excess quantity dischargedfrom the center. Likewise, by varying the proportionate dimensions andpitch of the core and blades, my device maybe adapted to any of thevarious sizes and designs of the well known types of manure spreaders.

in F ig. 4 have shown a form of construction of my device in which theblades have the same width and pit-ch and bear the same relation in?radial distance from the airis of the device as in the preferred formillustrated in Figs. l and 2, and from which the core shown in thelillustration of my preferred construction is omitted. Therein col-4lars 24 formed with straps 25 and secured to the shaft 15 supply thesupporting means for the blades, and thereby accomplish a lighterconstruction.

1Vlhile the preferred embodiment of my invention has been describedherein with considerable particularity, l do not intend to be limited inthe interpretation of the followV ing claims to the details ofconstruction set forth, except as may be necessitated by the prior art.y

l'claim as my invention:

l. ln a spreader mechanism, a load-distributing device comprising arotating spiral blade formed withprogressively varied pitch andperipheral diameters7 and having a rotilting conical core.

2. n a spreader having a load containing body and a dischurgingbeater atone end 5 thereof, a Wide spread rotating distributor adapted to receivethe load from said discharging beater and comprising right and leftdiverging spiral blades, and eJ central core of varying diameters havingits least diameter at the center and progressively increasing indiameter toward its ends.

In testimony whereof, I have hereunto set my hand.

` JOHN C. BOHMKER.

